Roman oehler



No Modem R. O E HLER. WATCH 'MAKBRS PLIERS'.

- Patented Dec. 30', 18851.

IN V'EJVTOli.

WITNESSES.

UNITED STATES PATENT ROMAN OEHLER, OF INDIANAPOLIS, INDIANA.

WATCH-MAKERS PLIERS.

SPECIFICATION forming part of Letters Patent No. 309,976, dated December 30, 1884.

Application filed March 22, 1884. (X0 model.)

To all whom, it may concern:

Be it known that I, ROMAN OEHLER, of the city of Indianapolis, county of Marion, and

State of Indiana, have invented certain new and useful Improvements in Iliers, of which the following is a specification.

The object of my said invention is to provide pliers which are adapted to close the joints ofrings, links, watch-bows, &c., tightly without hammering or in any way disfiguring the surface of the ring or other article. I accomplish this object by forming one of the jaws of the pliers round, or round on its inside face, and the other jaw correspondingly hollow, whereby they are adapted, when pressed together upon an open ring, to contract it and close the joint.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure lis a side elevation of a pair of my improved pliers; Fig. 2, a central longitudinal section of the same; Fig. 3, a side elevation, in which the jaws of the pliers are rounded for only a part of their length; Fig. 4, a cross section through the jaws of the pliers, showing the operation, a ring being shown as it appears during the process of closing; Fig. 5, a cross-section looking to the right from the dotted line .2 z in Fig. 2; Fig. (3, a cross-section looking to the right from the dotted line 'g y in Fig. 3, and Fig. 7 a simi lar View on the dotted line w :0.

In said drawings the portions marked A represent the pliers, and B the ring.

The pliers A are not peculiar in their construction, except in the formation of the jaws. One of said jaws, a,is preferably formed round, as shown, tapering from the back of the jaw toward its point; but, if preferred, its inside face, may be formed convex, and its back formed in any shape desired, the convex formation of its face being all that is necessary to accomplish its object in most cases. The other aw a is formed concave ta erin in size to J 7 7 2 0 correspond to the tapering ofits fellow. Near the rear end of this jaw a transverse groove, 66', is preferably formed. It is halfround, and serves as a rest in which the large rings or watclrbows -niay be placed While being operated on, and they are thus prevented from having their surfaces dented or in any way defaced by the sharp corners of the jaw.

Thejaws may be constructed, as shown in Figs. 1 and 2, concave and convex their entire length, or, as shown in Fig. 3, being square for a portion of their length, and be thus adapted to hold, as well as bend, a ring or other article.

My improved pliers operate as follows: The ring being formed and placed in position in the chain or other place where it belongs, the ends are closed together and a perfectly tightjoint formed by placing the side of said ring opposite the opening between thejaws and pressing them together. (See Fig. 4.) The diameter of the convex and concave jaws being less than that of the ring to be closed, it operates to contract said ring and bring the ends together, as will be readily understood.

In closing up large rings or tightening watch-bows, they are placed near the rear end and in the transverse groove a in the lower jaw, a. This conforming more perfectly to the shape of the ring, it does not mar its surface, as before described.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

The pliers described, one jaw having a tapered convex face, the other jaw atapered concave face, the concave jaw having the transverse groove af, substantially as described.

In testimony whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 18th day of March, A. D. 1884.

ROMAN OEHLER. [L. s.]

In presence of- E. W. BRADFORD, CHAS. L. THURBER. 

